We leave Scarlet Witch without a home, without a family, and she ends up creating a surrogate family within the Avengers and making a decision to be a part of the team. I think a lot of that has to do with what Jeremy's character - like his attitude towards her and the speech he gives her at the end of the film. So we pick up with her having started a new life, but still trying to figure out what her abilities are and if using them causes greater good or greater damage.